import second as s

def main():
    '''
    python程序打包实例
    打包单独文件
    python -m zipapp pyzip.py -o zipdemo.pyz
    打包文件包
    python -m zipapp pyzip -o pyzip.pyz -m "pyzip:main"
    :return
    '''
    print("main 程序开始执行...")
    s.sayhello()